Budolph hoffman



R. HOFFMAN.

CO0K.STOVE. APLicmon' msn API. 2o. me.

Hill. vf

Wifi/12.5565.'

Patented ot.14,'1919.

UNITED s'rArEs Param OFFICE.

RUDOLPH HOFFMAN OF KAN KAKEE, ILLINOIS, ASSIGNOR TO SEARS, ROEBUCK AND COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION F NEW YORK.

oooK-sTovE.

To all 'whom it may concern:

Be it known vthat I, RUDOLPH HOFFMAN, a citizen of the United States, residing at Kankakee, inthe county of Kankakee and State of Illinois, have invented certain new and useful Improvements in Cook-Stoves, of whichv the following .is a specification.

This inventionrelates to improvements in water heaters of the type wherein the utensil-supporting grid of a fluid-fuel cook stove is chambered to contain water, and wherein the grid is connected to a water reservoir built into the stove. lIn the accompanying drawings Figure. 1 is a fragmental top plan view of a stove embodying the fea-tures of my invention. F ig. 2 issa fragmental front elevation. Fig. 3 is a section on line 3-3 of Fig. 4. Fig. 4 is a section on line 4-4 of Fig. 2. In the drawings, A! denotes a frame of any suitable character. 1 is an oil feed pipe, 2 a 'burner of the wickless perforated-combustionftube type,.and 3 adrum surrounding the combustion tubes (not shown). Any other'suitable form of burner may, however, be employed. 4 is the top plate of the stove. In said to plate is an opening v5- directly above the urner to receive a grid 6. Said grid comprises a tubular ani v nulus 7 and a .plurality of tubular radial arms .8 communicating with each other and with. the annulus. Other arrangements of tubular elements communicating with various portions of the annulus may, however, be used without departingffrom the invention. The annulus 7 -is connected to a reservoir 9 bymeans of pipes l10 and 11. .The pipe 10 which supplies water `to the grid connects 40 with the lower side of the annulus 7 at a point 12 between two of the arms 8. The pipe 11 is connected to the slde o f the annulus at 13 in a plane above'the intake 12 and at a point between two arms '8. The

45 inlet 12 and the outlet 13 areapproximately 90 apart. As shown in Fig, 2, the pipe 10l connects with the reservoir at a point below the plane in which the pipe 11 communicates with the reservoir.

The reservoir isdivided by a partition 14 into two'compartments 15 and 16. Communication between the compartments is established through a relatively small opening 17 formed in the partition 14 and pref- Specification of Letters, Patent.

erably located close to the bottom of the reservoir. 18 is a-cover for the reservoir, said cover being hinged at 19. The reservoir may be mounted upon and secured to the stove frame in any suitable way.

In operation, when a cooking utensil,

{iat-iron or other article is placed upon the grid 6, the heat Vgenerated by the burner is transmitted not only to such article but also to the water in the grid. .The warmed'water flows out through the pipe 11 and is replaced by relatively cool water iowing into the grid through the pipe 10. Inasmuch as the inlet 12-and the outlet 13 are a substantial distance apart, and one of the arms 8 connects with the annulus 7 Iat a point between the inlet and the outlet,l water does not short-circuit from the inlet to the outlet to any material extent..

By reason of the partition 14', hot water accumulates in .the compartment 16, the cooler water in the lower portion of said Patented 0611.14, 1919.

Application lied April 20,y 1918. Serial No. 229,717.

hot water compartment flowing through the opening 17 into the compartment 15 and thence through the pipe 10 to the grid.

Hot Water thus becomes available for use, zmuch more quickly than if circulation in -the` reservoir lwere unrestricted.

, Water may be removed from the 'reservoir by means of a dipper or the like whenever desired.

2Q are screw plugs for closing openings necessarily formed in the 'operation of casting the grid. y Y

The reservoir' is rigidly secured to the 'stove frame in 'any suitable way, and the gridis held in6 place 4in any desired manner as by reason of its connection'to the pipes 10 and'll. A l

Various changes may be made inthe construction herein shown without departing from lthe scope of theinvention as set forth in the appended claim..

I claim as my invention:

A cookstove having, in combination, a burner, a hollow'grid above'the burner having a Water inlet and a Water outlet, a reservoir, the lower portion of which is disposed p in the horizontal lane of the grid, a `vertical partition in t e .reservoir forming hot and cold water compartments, and a pair of pipes connectingsaid compartments with 'said inlet and outlet of the grid,.respec tively, so as to permit the Water in the cold Water compartment to flow to the grid to be heated by the burner and when heated to owf from the grid to the hot Water com- 5 pzlrtment,4 there being an opening in the the partition near the lower portion thereof to'permt the cooler Watern the hot vvfziter compartmentl to flow by the action of gravity into 'the cold water compartment and thence to the grid for reheating.

-In testimony Whereof,1 have Ahereunto set my hand.

RUDOLPH HOFFMAN. 

